Warp beam



n- 3, 1950 w. H. LEVERS ET AL 2,493,151

WARP BEAM Filed June 4, 1947 /n veno/Ls W/I-LEVERS H- B/l/NES AffornegsPatented Jan. 3, 1950 WARP BEAM William Hague Lovers and Richard HenryBaines, Spondon, near Derby, England, assignors to Ceianese Corporation"of America, a corporation of Delaware Application June 4, 1947, SerialNo. 752,380 In Great Britain June 27, 1946 1 Claim.

This invention relates to improved warp beams. Warp beams are requiredto accommodate greater or smaller widths of warp according to the widthof fabric it is intended to produce, and are frequently provided withflanges which have to be fixed in position by means of wedges and woodscrews. Such flanges are not easily adjustable and require aconsiderable time to set. Moreoven-conthiual setting and re-settingdamages the wooden beam and finally renders it unflt for further use.

The present invention is concerned with an improved type of flanged beamin which the flanges are adjustable and can be set quickly and easily toprovide for any width of warp, within limits dictated by theconstruction of the beam. Moreover, damage to the beam by setting andresetting the flanges is greatly reduced and the life of the beamtherefore considerably increased.

Warp beams in accordance with the present invention are provided withmovable flanges making a sliding fit on the beam and held againstoutward displacement by means of studs fittin securely in holes spacedalong the beam. One or more series of holes may be provided extendinglongitudinally along the beam at each end, and the studs are inserted inholes appropriate to the width of warp to be prepared. Advantageouslythe holes may be tapped and the studs screwed in.

Preferably, if a wooden beam is employed, that portion of the beam inwhich the holes are provided is made of or covered with metal. Forexample, metal plates may be inserted in the beam in the position inwhich the holes are required or each end of the beam may be providedwith a metal sleeve, the surface of which is flush with the woodensurface of the beam between the inner ends of the sleeves. Rotation ofthe flanges may be prevented by set screws in the bosses of the flanges.

By inserting studs in the appropriate holes the distance between theflanges can be adjusted to provide for warps of difierent widths, butwhen ordinary flanges are employed this arrangement does not permit offine adjustment of the distance between the flanges, and a furtherimportant feature of the present invention is to provide for this flneadjustment. This is effected by forming theouter edge of the boss of oneor preferably both flanges, i. e. the edge which bears against the setstuds, in the form of one or more cams, so that on rotating the flangeagainst the studs the position of the flange along the length of thebeam can be slightly varied. In this way, by appropriate rotation of oneor both flanges, any

size of warp within the limits laid down by the positions of the innerand outer stud holes in each end of the beam can be provided for. If itis objectionable for the warp ever to be slightly on centre, bothflanges should have a cam or cams with a throw at least equal to thedistance between the centres of adjacent stud holes. If on the otherhand it is not objectionable for the warp to be slightly off centre insome cases, it is sufficient that one flange only should have a. cam orcams with such a throw, or that both flanges should have a cam or camswith a throw equal to half the distance, or if desired between half andthe whole distance, between adjacent stud holes.

The stud holes may be arrangedin any suitable way. For example they maybe arranged in two rows diametrically opposite each other along thebeam, or in four rows at angular distances of round the beam. The camson the boss of each flange should correspond in number and position withthe rows of holes and all the cams should be identical. Thus, when tworows of holes at the opposite end of a diameter are em-- ployed the camsmay be in the form of two half helices.

The invention is illustrated in the accompanying drawing, which shows inside elevation one end of a warp beam with an adjustable flange.

In the particular construction illustrated a metal sleeved beam l isprovided with two diametrically opposite rows of equally spaccd tappedstud holes 2, into which studs 3 can be screwed.

The holes in each row are spaced 1 inch apart. Sliding on the beam is aflange 4 comprising an outwardly facing boss 5 carrying a set screw 8which, when tightened against the surface of the beam serves to preventthe flange rotating.

' The outer edge of the boss 5 is machined to form -two identical cams lon opposite sides of the boss, each cam having a throw of inch.

To set the beam for a given width of warp the flanges at both ends arefirst given a rough adjustment .by inserting the studs 3 in theappropriate holes and are then held against the studs and rotated untilthe necessary fine adjustment has been made. The set screws 6 arethentightened against the surface of the beam.

Having described our invention, what we desire to secure by LettersPatent is:.

A warp beam provided with movable flanges making a sliding fit on thebeam and having outwardly facing bosses the outer edges of which areeach formed into at least two identical cam surfaces, the said flangesbeing held against outmoans:

. 3 4 ward displacement by means of studs adapted to engage the said camsurfaces and screwed into "m mm identical parallel sets 01' tapped holesspaced along The 1 711118 references are or record in the the beam, theseveral sets of holes being equally file of this patent: spaced aroundthe beam at each end, one stud 5 m and one set of holes being providedfor each cam STATES PATENTS surface and the said flanges being heldagainst Number NW Date rotation by set screws in the bosses engaging907,761 Evmn Dec. 29, 1908 the surface of the beam, the throw of the in-1347984 Mellon July 2'1. 1915 dividual cams being equal to at least haltthe 10 M 9 Balthasar May 23. lm distance between the adjacent holes ineach set, Howard Dec. 2a, 1937 WILLIAM HAGUE LEVERS. RICHARD HENRYBAmlEB.

